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  1. #51
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    Click here to enlarge Originally Posted by whipplem104 Click here to enlarge
    It really is not a shudder in the lock up clutch. That would be if it was trying to slip the clutch and it was locking and unlocking. That would be fixed by new parts. It is more likely that the converter is locking up completely as designed. It is just that perfect spot were the engine speed is really low. Like I said it is more like a stick shift that is in to high a gear and you step on the gas and the car shudders. CAC is the customer assistance center. You should have their number in your owners manual or simply ask the dealer for their number. It is a good way to get corporate involved in an issue. THe dealers are really locked donw as to the paths they are aloud to take due to warrenty cost controls. Otherwise they would just toss a new transmission and everything under the sun in there and who nows what the problem is or was.
    Why is it locking up at those speeds though? Shouldn't the software know better?

  2. #52
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    Also forgot, a technician can deactivate the lock up for diagnostics only. It cannot be turned off permanently. Nor would you want them to.

  3. #53
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    Thanks.

    CAC is already involved, then. I'm waiting to hear back from a supervisor.

    So, whipple, let's say that I drive it 1000 miles and it still has this issue. What do you think the next step should be? Is it unreasonable of me to expect that they put in a new/rebuilt tranny?

  4. #54
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    I could not imagine a new transmission would do anything. Maybe a new tcu/valve body if that has not been done. I think your best course of action is to simply keep after them to fix it until you get a resolution or Mercedes decides to compensate you in some manor if they cannot fix it. I do not know what the later would be. That is a little over my pay grade. Be gracious through out the process but firm. I agree that it should not do it I just do not know if they are going to be able to fix it. It used to be for rare examples that you could get the Tech specialist to make changes to software under direction from corporate in the software but those days are mostly gone. The dealers really do not have good tech support from Mercedes anymore. It is a shame. Volkswagen has much better support for the dealers in special issues as do many other manufacturers.

  5. #55
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    Let me first say a big "THANK YOU" for staying with me here. I really appreciate all of your input....please know that.

    I was told that MB has only 4 or 5 "master technicians" in the entire US. I was also told that they actually sent one of them, from Jacksonville (Florida, I'm assuming) to look at my car. He was the one who told them to change out the torque converter and change one of those valves in the valve body (prior to that, they had already changed the torque converter, but had not changed out that valve...he told them that the valve also had to be changed at the same time. He was apparently only there for one day. That was last friday. They didn't change that valve in the body until late friday and drove it monday and told me that it was "fixed". Well, it is certainly not fixed....exact same issue as before.

    I will keep after them. I'll let you know what happens.

  6. #56
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    Click here to enlarge Originally Posted by airtime23 Click here to enlarge
    I will keep after them. I'll let you know what happens.
    Good luck and let us know what happens. Guess you have to put on those 1000 miles now...

  7. #57
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    Click here to enlarge Originally Posted by whipplem104 Click here to enlarge
    I could not imagine a new transmission would do anything. Maybe a new tcu/valve body if that has not been done. I think your best course of action is to simply keep after them to fix it until you get a resolution or Mercedes decides to compensate you in some manor if they cannot fix it. I do not know what the later would be. That is a little over my pay grade. Be gracious through out the process but firm. I agree that it should not do it I just do not know if they are going to be able to fix it. It used to be for rare examples that you could get the Tech specialist to make changes to software under direction from corporate in the software but those days are mostly gone. The dealers really do not have good tech support from Mercedes anymore. It is a shame. Volkswagen has much better support for the dealers in special issues as do many other manufacturers.
    whipplem104,
    I drove it rather extensively today on the highway. I am now in total agreement with you that it seems just when you're driving a straight drive and you put it in too high of a gear and then it gets bogged down with slight shudder/hesitation/vibration. It always goes away if I perform a kickdown into a lower gear or if I manually downshift from 7th to 6th using the paddle shifter.

    Let me ask you, at what speed should the upshift happen from 6th to 7th? It seems to me that it's shifting too soon and therefore, for instance, I'll be going around 70 mph, the rpms will be around 1600-1700 and that's when it gets bogged down, especially worse going uphill. Is this normal for this car to be going at that speed and have that rpm range? It's not until I get above 80 mph does the rpm get abovet 2000-2100 and that's when the bogging down/shudder/vibration goes away.

    So, basically, it happens at the lower range of rpms.

    Any further thoughts as to a resolution/solution?

    Thanks!

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    That is just how they are. It is for fuel economy. I just think that the programming needs to be a little different and not lock the converter in that range. But the only way to fix it is for Mercedes to change the software. The dealer will not be able to change it unless there is software for this. Which I am sure they have checked and updated to the newest by now. I would get the Mercedes corporate rep to go for a ride. I do not know if it will get you any further but then they can report back to Corporate for the issue.

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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by whipplem104 Click here to enlarge
    That is just how they are. It is for fuel economy. I just think that the programming needs to be a little different and not lock the converter in that range. But the only way to fix it is for Mercedes to change the software. The dealer will not be able to change it unless there is software for this. Which I am sure they have checked and updated to the newest by now. I would get the Mercedes corporate rep to go for a ride. I do not know if it will get you any further but then they can report back to Corporate for the issue.
    Would replacing the TCU fix the issue of the software?

  10. #60
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    Click here to enlarge Originally Posted by airtime23 Click here to enlarge
    Would replacing the TCU fix the issue of the software?
    Bump for an answer.

  11. #61
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    Not really. The software can be updated without changing any parts. Only if there was something wrong with the unit. And the dealer would have to get approval for this. Which is nearly impossible. I think that your only course of action is to drive the car and if/when the problem does not go away insist that the Mercedes district rep go for a ride to verify the problem. Then hope, and I mean hope that someone at corporate does something to change it.The answer you will be given is we will get back to you, which means we do not have a fix for this at this time and or do not intend on fixing it. If a bunch more people complain about it maybe then we might do something about it. You can always try. But honestly I think that it is one of those issues you will just have to learn with. I hope not but
    that is were it will end most likely or you moving on to something else. There is not really anything wrong with the car and it is not hurting anything.
    Good luck.

  12. #62
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    Heh, that was fast. Thanks.

  13. #63
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    whipple, I appreciate the reply, but there really is something wrong with the car. After having put out so much coin for a high-performance car, I'd expect that it would not vibrate/hesitate/bog down at such a common highway speed. I mean 70-80 mph is my usual cruising speed going to work every day and it is damn annoying! And I don't want to have either accelerate above 80 mph or downshift manually into 6th to get it to go away (really a "work around", but not practical each and every time).

    I think that if MB cannot/will not fix it, they're going to have to buy the car back from me.

  14. #64
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    First see if they are willing to replace the whole trans and if the problem persists after that. Unfortunately, you have to put a bunch of mileage on it first.

    Possibly get corporate involved as well.

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    1 out of 1 members liked this post. Yes Reputation No
    Oh, I also spoke with a certified mechanic who owns a MB-specific repair shop out in California. He was nice enough to just spend some time on the phone with me and give me advice.
    He said he's seen similar issues on MB and each time, MB kept giving the owners the runaround. He said they always go for the most cost effective (read: cheap) route: replace the tranny mount, then drive it, then flush the transmission, then drive it, then replace the torque converter, and drive it some more, then repeat the flush, etc. He said in his experience, the only thing that has actually fixed the issue was them finally accepting that what they were doing wasn't working and them finally having to replace the ENTIRE transmission system, including a new torque converter, valve body, tcu, tranny, etc. The whole thing. He said just to keep after them and be persistent.

    We'll see what happens. I'm expecting a call from corporate this week. I'll keep you informed.

    Thanks for your interest, Sticky and whipple.

  16. #66
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    Click here to enlarge Originally Posted by airtime23 Click here to enlarge
    MB kept giving the owners the runaround. He said they always go for the most cost effective (read: cheap) route: replace the tranny mount, then drive it, then flush the transmission, then drive it, then replace the torque converter, and drive it some more,
    Exactly, they hope you won't persist and they will not have to go any further (as in, further into their pockets).

  17. #67
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    I understand their primary concern is making money (as is the case with all businesses), but frankly, I expect more from a brand such as MB, and especially with an AMG branded vehicle. Perhaps I'm just naive?

  18. #68
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    Click here to enlarge Originally Posted by airtime23 Click here to enlarge
    Perhaps I'm just naive?
    No, your thoughts on the brand would have been accurate pre-economic crisis. Maybe that is being too nice, it probably started changing to being all about dollars and cents well before that but now it is just blatant.

  19. #69
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    I agree that it should not do it. I meant that there is no harm in the issue. It is not going to hurt anything or probably ever get worse. When I say there is nothing wrong I mean that there is not a part to replace that will fix it. And if you drove another it probably does the same thing. I think that you should stay on them to fix it.

  20. #70
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    Click here to enlarge Originally Posted by whipplem104 Click here to enlarge
    I agree that it should not do it. I meant that there is no harm in the issue. It is not going to hurt anything or probably ever get worse. When I say there is nothing wrong I mean that there is not a part to replace that will fix it. And if you drove another it probably does the same thing. I think that you should stay on them to fix it.
    I understand it won't get worse and there isn't a part to replace but what is he supposed to do? Is replacing the entire trans really the only choice?

    Does this happen to a lot of cars? This just seems ridiculous.

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    So you really think that every 2009 CLS 63 AMG has this issue? I have a hard time believing that. I mean it's not a minor annoyance or something that happens every once in a while or at speeds that we aren't likely to drive commonly (like above 100 mph or something). It happens each and every time I drive the car above 65 mph up to 80 mph!

    You don't expect a > $100,000 car (when new) to do this. And under no circumstances can I learn to "live with it".

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    2 out of 2 members liked this post. Yes Reputation No
    Just an update.

    Heard from the regional manager in charge of the Southeast area. He also has a background in technical/service aspects, but is now in sales/admin.

    He has stepped up to the plate. He will be meeting me at the dealership service dept. in a couple of weeks and will bring a master technician from Jacksonville with him to personally assess the car and see what needs to be done.

    Finally, getting somewhere. I'll keep you posted.

  23. #73
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    Click here to enlarge Originally Posted by airtime23 Click here to enlarge
    Just an update.

    Heard from the regional manager in charge of the Southeast area. He also has a background in technical/service aspects, but is now in sales/admin.

    He has stepped up to the plate. He will be meeting me at the dealership service dept. in a couple of weeks and will bring a master technician from Jacksonville with him to personally assess the car and see what needs to be done.

    Finally, getting somewhere. I'll keep you posted.
    Glad you are getting somewhere with this and thanks for keeping us updated.

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